Slate-pencil sharpener



(No Model) 7 E. R. LOVETT.

SLATE PENCIL SHARPBNEE. No. 449,625. Patented Mar. 31, 1891.

Witnesses: lhvenlor:

2 Moms ravens cm, moraine, WASNINGYON, n. c.

UNITED STATES PATENT OFFICE.

ELIPHALET R. LOVETT, OF LYNN, MASSACHUSETTS, ASSIGNOR OF PART, BY DIRECT AND MESNE ASSIGNMENTS, TO MAYNARD O. DAVIS, ARTEMAS S. CARR, AND JOSIAH H. PREBLE, OF SAME PLACE, AND LEWIS S. PEABODY,

OF PEABODY, MASSACHUSETTS.

SLATE-PENCIL SHARPEN ER.

SPECIFICATION forming part of Letters Patent No. 449,625, dated March 31, 1891.

Application filed August 23, 1890.

To all whom it may concern.-

Be it known that I, ELIPHALET R. LOVE'IT, of Lynn, in the county of Essex and State of Massachusetts, have invented a new and useful Improvement in Slate-Pencil Sharpeners, of which the following, taken in connection with the accompanying drawings, is a specification.

My invention relates to slate-pencil sharpto eners; and it consists in certain novel features of construction and arrangement of parts, which will be readily understood by reference to the description of the drawings, and to the claims hereinafter given, and in which my invention is clearly pointed out.

Figure 1 of the drawings is an end elevation of my improved slate-pencil sharpener. Fig. 2 is a side elevation of the same, viewed in the direction indicated by the arrow on Fig.

1. Fig. 3 is a longitudinal section of the same, the cutting-plane being on line a: m on Fig. 1. Fig. 4 is an end elevation of a sharpener having an increased number of cuttingedges, and Fig. 5 is a side elevation of the same and a portion of a pencil in position for being sharpened.

My sharpener comprises a plurality of cutting-blades a a, arranged around and diverging from a common center and formed in one 50 piece with a common hub or stock b, said outters being V-shaped in cross-section, and being entirely separated from each other from their junction with the common huh I) to their free ends, whereby a perfectly free cscape is provided for the material cut from the pencil in the act of sharpening.

In the manufacture of my improved slatepencil sharpener I take a piece of round steel of the desired length and turn to the desired 0 shape, preferably to a cylindrical form, for

the greater part of its length, having a diameter of one-quarter of an inch more or less, with a head at one end of somewhat larger diameter, the periphery of which I mill or roughen, as indicated at c in Figs. 2 and 5, as a means of facilitating the holding of the sharpener firmly between the thumb and fingers of one hand,while the pencil is manipulated by the thumb and fingers of the other 5 hand. I then divide the cylindrical portion of the piece of steel into a plurality of V- Serial No. 362,854. (No model.)

shaped blades by sawing two or more diametrical slits, extending from the end opposite said 'milled head toward said head for a distance of five-eighths to three-fourths of an inch, more or less, and then spread said blades at their free ends until they assume the desired angle to the axis of the tool that is to be given to the pencil when sharpened.

When properly shaped, the tool is hardened and is then ready for use.

If preferred, the piece of steel, instead of being turned cylindrical for the greater part of its length, may have the same portion turned to the form of a frustum of a cone the base of which is at the end opposite the milled head, and the cutting-blades may be formed by cutting therefrom acute V-shaped pieces of stock, when the tool will be ready to harden without spreading the blades.

This implement is not designed for sharpening lead-pencils the lead of which is inclosed in wooden cases, but is intended especially for sharpening slate-pencils, and is very effective for that purpose.

What I claim as new, and desire to secure by Letters Patent of the United States, is

1. A slate-pencil sharpener comprising a common hub or head and a plurality of V- shaped cutting-blades formed in one piece therewith and diverging therefromat equal angles to the axis of the tool, said blades being entirely separated from each other from their junction with said common hub to their free ends.

2. In a slate-pencil sharpener, the combination of the hub or stock b, provided with the milled or roughened head a, and a series of V-shaped cuttingblades a, formed in one piece with said hub and extending therefrom in directions oblique to each other and to the axis of said hub, substantially as shown and described.

In testimony whereof I have signed my name to this specification, in the presence of 5 two subscribing witnesses, on this 21st day of August, A. D. 1890.

ELIPHALET R. I LOVETT.

Witnesses:

N. O. LOMBARD, WALTER E. LOMBARD. v 

